Below is the OP but now I'm considering going to the doctor because the swelling is taking up a good portion of my leg and is getting more and more painful. Normally, I would wait but it's 5 PM on Friday were I live -- Dr. is only open one more hour.

I want to be told what to do, LOL!

Okay, here’s the deal – I’m a usually tough woman but 2 recent insect bites have caused me LOTS of pain. I got an ant bite last week that swelled up like a cyst and caused deep muscle pain. Then the bee sting I got yesterday actually caused me to loose my breath and heart palpitations just after the sting. Today it’s swollen up like a half soft ball, is really red and seriously painful and itchy. It’s actually making it hard for me to put weight on my leg.

This is totally new for me. Could I have developed an allergy to stinging bugs? What can I do about it? Any treatment?

The other thought I have is that I’m not used to the insects in Europe because I just moved here from the US about 1.5 years ago. I started thinking about this because I’m also sensitive to a thistle plant that we have in our garden. DH grew up here and isn’t in the least bit sensitive to them and DC was stung by a bee and didn’t even seem to notice.

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I’m seriously pathetic about going to the doctor – hate it and don’t really ever go – I’m just so surprised by this. I guess I’m just worried that this reaction is a warning that I’m developing a severe allergy. I went on line but the sites deal mostly with the anaphylactic (is that right?) shock and/or very minor reactions – nothing in between.

Eww…now I’m having these weird spasms and the swelling is pulsing and changing colors – yuck.

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You should go to the doctor, the emergency room or at very least go see a pharmasist. Get it treated, it could be getting infected, and yes it could be an indication that you are developing a serious allergy. If you get stung again and are unprepared you could go into anaphalectic shock.
Also are you sure it was a bee sting? Did you see the bee sting you?